To achieve the highest accuracy of the voltage in a circuit, the length of the slide wire of a potentiometer should be
Correct answer: B. As long as possible
- A. limited to 100 cm.
- B. As long as possible
- C. As short as possible
- D. limited to less than 500 cm.
Explanation
A longer potentiometer wire provides a greater potential gradient, meaning a smaller change in length corresponds to a smaller change in potential difference. This allows for more precise adjustments and a higher degree of accuracy when balancing the potentiometer to measure an unknown voltage.
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